Table 1

Male:female ratios of expression for A and X or Z genes in four species

Species and tissue

A mean

A median

X or Z mean

X or Z median

Male X:A or Z:A ratio

Female X:A or Z:A ratio

Mouse

Brain

1.00

1.00

0.997

0.997

1.30

1.28

Muscle

1.01

0.990

0.967

0.960

0.866

0.875

Liver

1.03

0.993

1.01

0.975

0.726

0.729

Adipose

1.02

0.976

1.04

0.989

0.768

0.755

Human

Hypothalamus

1.03

1.01

1.01

1.000

1.03

1.05

Muscle

1.02

1.01

0.990

0.989

1.14

1.26

LB cells

1.00

1.00

0.973

0.987

N/A

N/A

PBM cells

1.00

1.00

1.00

1.001

0.979

0.981

Zebra finch

Adult brain

1.04

0.988

1.29

1.25

N/A

N/A

P1 brain

0.994

0.957

1.23

1.16

N/A

N/A

Liver

0.984

0.950

1.19

1.07

N/A

N/A

Kidney

1.04

1.01

1.13

1.09

N/A

N/A

Chicken

Brain

0.997

1

1.40

1.34

1.03

0.771

Heart

1.02

1.02

1.34

1.31

0.923

0.707

Liver

0.989

0.978

1.24

1.20

1.08

0.877

The table shows unlogged values.

Itoh et al. Journal of Biology 2007 6:2   doi:10.1186/jbiol53